# AgentReader Trust History

> AgentReader Trust History is a paid API for AI agents from agentreader.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns the complete per-check trust history for a specific x402 resource URL, including delivery rate, response validity, latency, and price stability based on real paid test purchases.

## Facts

- Endpoint: GET https://agentreader.dev/trust
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentreader-trust-history-ed2e2c72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1VwG5InGQvshoamcEClQ9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentreader-trust-history-ed2e2c72
```

Example prompt: Before I wire https://someapi.example.com/data into my pipeline, can you pull its full trust history from AgentReader — I want to see real delivery rates, latency, and price stability from actual paid purchases?

## When to prefer this

Use this endpoint when you need the full granular per-check history for a specific x402 resource, rather than just aggregate leaderboard data. It is the right choice when performing due diligence before integrating an unfamiliar x402 API into an agent pipeline, when investigating reliability issues with a specific endpoint, or when you need detailed latency, price, and validity data per individual test. Prefer /leaderboard for broad discovery or comparison across many services without needing per-check detail.

## Known failure modes

- 404 returned if the resource URL has never been tracked — no charge is incurred
- Invalid or malformed resource URL may result in a 400 error
- Network timeouts if agentreader.dev is temporarily unavailable
- Resource URL must be an x402 endpoint; non-x402 URLs will not have trust records

## How this service works

Verified-delivery trust data for any x402 service: full history of real PAID test purchases against the endpoint (not free 402 probes) - delivery rate, response validity, latency, price stability. Free aggregate at /leaderboard; this endpoint returns the complete per-check history for one resource. Untracked resources return 404 and you are NOT charged. Use it before wiring an unknown x402 service into your agent.

## Output

Returns the complete per-check history for the queried x402 resource, including individual test records from real paid purchases: delivery success/failure per check, response validity assessments, latency measurements, and price at time of check. Aggregate metrics like delivery rate and price stability are derived from this history. Returns 404 with no charge if the resource has not been tracked.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "resource"
     ],
     "properties": {
      "resource": {
       "type": "string",
       "description": "x402 resource URL (or origin) to look up"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentreader-trust-history-ed2e2c72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentreader.dev](https://www.zero.xyz/host/agentreader.dev/llms.txt)